Home
Class 12
PHYSICS
The radius of a circular loop is r and a...

The radius of a circular loop is r and a current i is flowing in it. The equivalent magnetic moment will be

A

`pir^2i`

B

`ir `

C

`2piir`

D

`i/(r2)`

Text Solution

Verified by Experts

The correct Answer is:
A


Here, r is radius of loop
So, area of loop = `pir^2`
Therefore , its magnetic moment will be `pir^2xxi`
Promotional Banner

Topper's Solved these Questions

  • AIIMS 1998

    AIIMS PREVIOUS YEAR PAPERS|Exercise PHYSICS|60 Videos
  • AIIMS 2000

    AIIMS PREVIOUS YEAR PAPERS|Exercise PHYSICS|49 Videos
AIIMS PREVIOUS YEAR PAPERS-AIIMS 1999-PHYSICS
  1. A thin equiconvex lens has focal length 10 cm and refractive index 1.5...

    Text Solution

    |

  2. Six resistors each of resistance R and two resistors each of resistanc...

    Text Solution

    |

  3. The radius of a circular loop is r and a current i is flowing in it. T...

    Text Solution

    |

  4. Power factor in a series R-L-C resonant circuit is

    Text Solution

    |

  5. In the network given below all the five capacitors have the same capac...

    Text Solution

    |

  6. The stationary wave produced in a stretched string is given by Y=A Cos...

    Text Solution

    |

  7. A sinusoidal a.c. flows in an inductor as shown in the given below : -...

    Text Solution

    |

  8. Which of the following relations between weber, second, ampere and vol...

    Text Solution

    |

  9. A circular coil of radius R carries a current in it. The magnetic fiel...

    Text Solution

    |

  10. A soap film is formed on a wire ring held vertically and allowed to dr...

    Text Solution

    |

  11. The specific charge of an electron is

    Text Solution

    |

  12. Vectors vec(3i)-vec(2i)+veck and vec(2i)+vec(6j)+vec(mk) will be perpe...

    Text Solution

    |

  13. Newton - second is the unit of

    Text Solution

    |

  14. In the S.I. system, the unit of energy is-

    Text Solution

    |

  15. Two rods of the same length L but cross-section in the ratio SB//SA=4 ...

    Text Solution

    |

  16. Most of the comets moving round the sun have orbits of the shape of

    Text Solution

    |

  17. Kirchoff's laws are applicable to

    Text Solution

    |

  18. In the given diagram, a current of 0.5 A is caused to pass through a r...

    Text Solution

    |

  19. In LCR circuit if 1/"LC" gt R^2/(4L^2), the circuit is

    Text Solution

    |

  20. To use a transistor as an amplifier

    Text Solution

    |